Door stop and lock



Feb. 2, 1932. J. B. SPARKS DOOR STOP AND LOCK Filed June 15, 1929 foe,5. Spar Rs" 4a member thereon.

Patented Feb. 2, 1932 JOE B. SPARKS, 0F VALLEJO, CALIFORNIA DOOR STOPApplication filed June 15,

This invention relates to improvements in door stop and locks of theclass where a limit stop acts to lock in the open position, and means torelease the lock.

The object of the invention is to provide a simple locking mechanism forholding a hinged door securely in the open position at any predeterminedangle.

, Another object is to provide a locking means that is readily unlocked.

Another object is to provide a locking means in which the strain isreleased from the catch when the door is locked in the open position.

Other objects of the invention will be apparent as the descriptionproceeds.

An embodiment of the invention is shown in the accompanying drawings inwhich the same reference numeral is applied to the same portionthroughoutthe several figures of the drawings, and of which there may bemodifications.

Figure 1 is a plan view of a door and doorway, the door being in theopen locked posi tion showing the locking mechanism,

Figure 2 is an edge view of the locking mechanism somewhat enlarged,

Figure 3 is an enlarged detail of the latch and release,

Figure 4 shows a plan of a modified form of locking device, and

Figure 5 is an edge view of the device shown in Figure 4 showing theupper portion of the door.

The numerals 1 and 2 indicate two bars hinged at 3. The bar 1 is pivotedto the up per part of the doorway at 4, and the bar 2 is pivoted to thebracket 5 at 5, which is fixed to the door 6 by screws, or othersuitable means. The bars are bent down at 1 and 2.

7 indicates the hinge of the door, and 8 the front of the building towhich the door is hinged. The bar 2 has the portion 9 extending past thepivot and has the upturned stop This member fits into a notch in the bar1 to prevent further movement past the center line when the bars are inthe locked position.

The means for throwing the bars out of the locking position, consists ofan extension 11 AND LOCK 1929. Serial No. 371,093.

of the bracket 5 on which is mounted the brackets 12 and 13 in which ispivoted the catch 14 011 the pin 15. This catch has the notch 16 forholding the bar 2 when the bars are in the locking position.

A rod 17 pivoted to the catch at 18 and passing through a bracket 19, isused to re lease the catch by means of a pull rod 20 which is connectedto the eye 21 of the rod 17. A spring 22 acts to hold the catch up. Therod 20 extends down to within reach of the operator, and preferably hasthe handle 23 for convenience.

The catch 14 has the shoulder 24 extending above the pivot, and thelimit stop 25.

In the modified forms shown in Figures 4 and 5 the construction ispractically the same as the above described form except that no catch isused.

A rod 26 is fixed to the bar 27 so that the turning of the rod willswing the bar which is pivoted in the bracket 28 and the bracket isfastened to the door 29. The rod has the bearing 30 fastened to the doornear the handle 31 on the rod.

The bar 32 is pivoted to the upper part of the doorway at 33, and to thebar 27 at 34. The extension 35 on the bar 27 has the limit stop 36.

The pivoted bars are bent down at 37 and 38 to allow more room for thebracket 28, but these levers may be straight by modifying the form ofthe bracket. A spring 39 may be used to hold the bars in the lockingposition, but it will operate without the spring.

In the operation of the form shown in Figures 1 and 2 the act of openingthe door pulls the bars into a straight line, and the catch 14 holds thebars in that position until the latch is pulled down by the rods 17 and20., This action brings forward the shoulder 24 which forces out the bar2 and breaks the locking joint when the door can be closed.

In the form of the invention shown in Figures 4 and 5 the door is openedand the bars straighten out. By turning the rod 26 by means of thehandle 31, the final movement can be helped to straighten out the barsinto the locking position, by turning the rod the other way the lock isreleased.

It will be seen from the above description taken with the drawings thata very simple and efficient means is evolved to hold a door open.

Having thus described my invention, what I desire to secure by LettersPatent of the United States is as follows, but modifications may be madein carrying out the invention as shown in the drawingsand in the i aboveparticularly described form thereof,

, within the purview of the annexed claims;

1. A door stop and lock comprising a bar 1 pivoted on a doorway, asecond bar hinged to the first bar and pivoted on the door hinged insaid doorway, a lug on the second bar to engage the first bar when thedoor is opened-to its fullest extent, a latch pivoted 201 on said doorto engage the second barwhen the door is opened to its fullest extent, adepending releasing rod connected to said latch, a starting lug fixed tosaid latch and adapted to press on said second bar when said releasingrod is operated.

2. A door stop and lock comprising a bar pivoted on a doorway, a secondbar hinged to, the'first bar and pivoted onthe door hinged in saiddoorway, a lug on the second bar to engage the first bar when the barsare in a straight line position, a latch pivoted on said door to engagethe second bar when the bars are in a straight line position, adepending releasing rod connected to saidrlatch,

and a startinglug projecting upwardly from said latch and adapted topress on said, sec-. ondbarvwhen said releasing rod is operated.

3. A door stop and lock comprising a bar pivoted on a doorway, a secondbar hinged ,to the first bar and pivoted on the door hinged in saiddoorway, a lug on the second barto engage the first-bar when the barsare in a, straight line position, a latch piv oted on said door toengage'the second bar when the bars are in a straight line position,

" a depending releasing rod connected to said latch, and a starting lugprojecting upwardly from said latch and adapted to move said second barclear of said latch when said releasing rod is operated.

In testimony whereof I have hereunto set my hand this 29th day of April,A. D. 1929.

7 JOE. B. SPARKS,

